CN105510323A - Novel method for measuring formaldehyde content - Google Patents
Novel method for measuring formaldehyde content Download PDFInfo
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- CN105510323A CN105510323A CN201511015540.8A CN201511015540A CN105510323A CN 105510323 A CN105510323 A CN 105510323A CN 201511015540 A CN201511015540 A CN 201511015540A CN 105510323 A CN105510323 A CN 105510323A
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- formaldehyde
- novel method
- atmospheric sample
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- adsorbent
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
- G01N21/783—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour for analysing gases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention discloses a novel method for measuring formaldehyde content. The novel method comprises the following steps: collecting 10 ml of an atmospheric sample by using an atmosphere sampler; continuously extracting the atmospheric sample by using a Soxhlet fat extractor and using tert-butyl methacrylate as an extracting solvent; carrying out packing by using active carbon as a purification adsorption agent, and firstly pre-leaching the adsorption agent by using tea polyphenol after the packing; applying an extract liquor in the step (2) on the column, and then using an eluant to concentrate the applied extract liquor to be 1 to 2 mL, and putting in an environment under 0 DEG C to keep in a dark place for 2 to 3 hours. According to the novel method, through a colorimetric analysis method established by selective absorption and color development of a colored compound generated after the reaction of methyl aldehyde and a color developing agent in the measured sample for visible light, comparison is carried out through conversion and a preset chemical standard curve, then an exact methyl aldehyde concentration value is directly given out through the correction of temperature, humidity and pressure influences on air, and artificial operation is not needed, so that the site test is time-saving and labor-saving, and the test result is more accurate.
Description
Technical field
The present invention relates to a kind of detection method, especially relate to a kind of method of novel measurement content of formaldehyde, belong to Environmental security detection field.
Background technology
Finishings a large amount of now, the use of ornament materials, make indoor air pollution more and more serious, the harm that wherein will count formaldehyde is maximum, formaldehyde is magma poisonous substance, energy and protein bound, after sucking high-concentration formaldehyde, there will be the serious stimulation of respiratory tract and oedema, eye shouting pain, headache, also bronchial astehma can occur, long-term inhaled formaldehyde can be carcinogenic, brings out leukaemia.In the middle of daily life, formaldehyde is present in the material such as decoration and furniture of numerous species, in use formaldehyde can come out at leisure from these materials, it is almost tasteless again when concentration is low, often sucking a small amount of formaldehyde unconsciously, slow poisoning can be caused, therefore, people often should test the air quality of oneself living environment, in case harmful gas brings injury.
Summary of the invention
For the deficiency that prior art exists, technical matters to be solved by this invention is, a kind of method of novel measurement content of formaldehyde is provided, can the on-the-spot content of formaldehyde fast, accurately detected in air, result accuracy and with a high credibility, test duration is short, method of testing is simple, and with low cost, handling safety.
For solving the problems of the technologies described above, the technical scheme that the present invention takes is, a kind of method of novel measurement content of formaldehyde, comprises the following steps: 1) use air sampler to gather 10ml atmospheric sample;
2) Soxhlet fat extraction apparatus is used by atmospheric sample to do extraction solvent continuous extraction with Tert-butyl Methacrylate;
3) use activated charcoal fill post as purifying adsorbent, dress post after first with Tea Polyphenols to the pre-drip washing of adsorbent;
4) use eluent to be concentrated into 1-2mL by after the extract upper prop in step (2), the environment be placed under zero degree keeps in Dark Place 2-3 hour;
5) the phenylethylene Zeo-karb added after activated process carries out ion-exchange treatment;
6) add 5ml ammonium citrate after filtering, shake fully mixes;
7) article colorimetric bottle is put into the cell of formaldehyde tester, and with the locking of cell locating cover, start the displayed value that instrument can draw air formaldehyde concentration.
The present invention generates colored compound to develop the color and the colorimetric analysis set up to selective absorption of visible ray after being reacted by formaldehyde in sample and developer, compared by conversion and the chemical standard curve preset, again to the correction of temperature, humidity, pressure influence in air, directly provide accurate concentration of formaldehyde value, without the need to again by artificial computing, on-the-spot test is time saving and energy saving, and test result is more accurate.
Embodiment
embodiment 1
The present invention is a kind of method of novel measurement content of formaldehyde, comprises the following steps: 1) use air sampler to gather 10ml atmospheric sample;
2) Soxhlet fat extraction apparatus is used by atmospheric sample to do extraction solvent continuous extraction with Tert-butyl Methacrylate;
3) use activated charcoal fill post as purifying adsorbent, dress post after first with Tea Polyphenols to the pre-drip washing of adsorbent;
4) use eluent to be concentrated into 1mL by after the extract upper prop in step (2), the environment be placed under zero degree keeps in Dark Place 2-3 hour;
5) the phenylethylene Zeo-karb added after activated process carries out ion-exchange treatment;
6) add 5ml ammonium citrate after filtering, shake fully mixes;
7) article colorimetric bottle is put into the cell of formaldehyde tester, and with the locking of cell locating cover, start the displayed value that instrument can draw air formaldehyde concentration.
embodiment 2
The present invention is a kind of method of novel measurement content of formaldehyde, comprises the following steps: 1) use air sampler to gather 10ml atmospheric sample;
2) Soxhlet fat extraction apparatus is used by atmospheric sample to do extraction solvent continuous extraction with Tert-butyl Methacrylate;
3) use activated charcoal fill post as purifying adsorbent, dress post after first with Tea Polyphenols to the pre-drip washing of adsorbent;
4) use eluent to be concentrated into 2mL by after the extract upper prop in step (2), the environment be placed under zero degree keeps in Dark Place 2-3 hour;
5) the phenylethylene Zeo-karb added after activated process carries out ion-exchange treatment;
6) add 5ml ammonium citrate after filtering, shake fully mixes;
7) article colorimetric bottle is put into the cell of formaldehyde tester, and with the locking of cell locating cover, start the displayed value that instrument can draw air formaldehyde concentration.
embodiment 3
The present invention is a kind of method of novel measurement content of formaldehyde, comprises the following steps: 1) use air sampler to gather 10ml atmospheric sample;
2) Soxhlet fat extraction apparatus is used by atmospheric sample to do extraction solvent continuous extraction with Tert-butyl Methacrylate;
3) use activated charcoal fill post as purifying adsorbent, dress post after first with Tea Polyphenols to the pre-drip washing of adsorbent;
4) use eluent to be concentrated into 1.5mL by after the extract upper prop in step (2), the environment be placed under zero degree keeps in Dark Place 2.5 hours;
5) the phenylethylene Zeo-karb added after activated process carries out ion-exchange treatment;
6) add 5ml ammonium citrate after filtering, shake fully mixes;
7) article colorimetric bottle is put into the cell of formaldehyde tester, and with the locking of cell locating cover, start the displayed value that instrument can draw air formaldehyde concentration.The present invention generates colored compound to develop the color and the colorimetric analysis set up to selective absorption of visible ray after being reacted by formaldehyde in sample and developer, compared by conversion and the chemical standard curve preset, again to the correction of temperature, humidity, pressure influence in air, directly provide accurate concentration of formaldehyde value, without the need to again by artificial computing, on-the-spot test is time saving and energy saving, and test result is more accurate.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited to above-mentioned citing; those skilled in the art; in essential scope of the present invention, the change made, remodeling, interpolation or replacement, all should belong to protection scope of the present invention.
Claims (1)
1. a method for novel measurement content of formaldehyde, comprises the following steps:
1) air sampler is used to gather 10ml atmospheric sample;
2) Soxhlet fat extraction apparatus is used by atmospheric sample to do extraction solvent continuous extraction with Tert-butyl Methacrylate;
3) use activated charcoal fill post as purifying adsorbent, dress post after first with Tea Polyphenols to the pre-drip washing of adsorbent;
4) use eluent to be concentrated into 1-2mL by after the extract upper prop in step (2), the environment be placed under zero degree keeps in Dark Place 2-3 hour;
5) the phenylethylene Zeo-karb added after activated process carries out ion-exchange treatment;
6) add 5ml ammonium citrate after filtering, shake fully mixes;
7) article colorimetric bottle is put into the cell of formaldehyde tester, and with the locking of cell locating cover, start the displayed value that instrument can draw air formaldehyde concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511015540.8A CN105510323A (en) | 2015-12-30 | 2015-12-30 | Novel method for measuring formaldehyde content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511015540.8A CN105510323A (en) | 2015-12-30 | 2015-12-30 | Novel method for measuring formaldehyde content |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105510323A true CN105510323A (en) | 2016-04-20 |
Family
ID=55718457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511015540.8A Withdrawn CN105510323A (en) | 2015-12-30 | 2015-12-30 | Novel method for measuring formaldehyde content |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105510323A (en) |
-
2015
- 2015-12-30 CN CN201511015540.8A patent/CN105510323A/en not_active Withdrawn
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160420 |
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| WW01 | Invention patent application withdrawn after publication |